Droplet dynamics of di spray from sub-atmospheric to elevated ambient pressure

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Droplet dynamics of di spray from sub-atmospheric to elevated ambient pressure. / Li, Yanfei; Guo, Hengjie; Ma, Xiao; Wang, Jianxin; Xu, Hongming.

In: Fuel, Vol. 179, 01.09.2016, p. 25-35.

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Li, Yanfei ; Guo, Hengjie ; Ma, Xiao ; Wang, Jianxin ; Xu, Hongming. / Droplet dynamics of di spray from sub-atmospheric to elevated ambient pressure. In: Fuel. 2016 ; Vol. 179. pp. 25-35.

Bibtex

@article{6916e3c47cef4886b208d343aaed423e,
title = "Droplet dynamics of di spray from sub-atmospheric to elevated ambient pressure",
abstract = "In this study, one of the five jets issued from a 5-hole Direct Injection (DI) injector was studied in detail using Phase Doppler Particle Analyzer (PDPA) and high speed imaging techniques. The tests were carried out in a constant volume vessel with absolute ambient pressures ranging from 0.05 to 0.5 MPa and injection pressures ranging from 6.0 to 15.0 MPa. Throughout the test conditions, the jet trajectory deviation of the target jet is observed due to the gas pressure imbalance between the inner and outer sides of the target jet. Both the results from spray morphology and the time-resolved droplet velocity have demonstrated the bifurcation of the target jet during the spray process at sub-atmospheric and atmospheric ambient pressures. It is attributed to the joint effects of the pressure imbalance between the two sides of the target jet and the velocity distribution change at the nozzle exit which relates to the vapor pressure of gasoline. The increase in injection pressure advances and enhances the deviation of the jet trajectory due to the larger jet speed. The deviation and/or bifurcation of the target jet also changed the size distribution.",
keywords = "Atomization, Droplet size, Droplet velocity, Gasoline, Spray",
author = "Yanfei Li and Hengjie Guo and Xiao Ma and Jianxin Wang and Hongming Xu",
year = "2016",
month = sep,
day = "1",
doi = "10.1016/j.fuel.2016.03.047",
language = "English",
volume = "179",
pages = "25--35",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier Korea",

}

RIS

TY - JOUR

T1 - Droplet dynamics of di spray from sub-atmospheric to elevated ambient pressure

AU - Li, Yanfei

AU - Guo, Hengjie

AU - Ma, Xiao

AU - Wang, Jianxin

AU - Xu, Hongming

PY - 2016/9/1

Y1 - 2016/9/1

N2 - In this study, one of the five jets issued from a 5-hole Direct Injection (DI) injector was studied in detail using Phase Doppler Particle Analyzer (PDPA) and high speed imaging techniques. The tests were carried out in a constant volume vessel with absolute ambient pressures ranging from 0.05 to 0.5 MPa and injection pressures ranging from 6.0 to 15.0 MPa. Throughout the test conditions, the jet trajectory deviation of the target jet is observed due to the gas pressure imbalance between the inner and outer sides of the target jet. Both the results from spray morphology and the time-resolved droplet velocity have demonstrated the bifurcation of the target jet during the spray process at sub-atmospheric and atmospheric ambient pressures. It is attributed to the joint effects of the pressure imbalance between the two sides of the target jet and the velocity distribution change at the nozzle exit which relates to the vapor pressure of gasoline. The increase in injection pressure advances and enhances the deviation of the jet trajectory due to the larger jet speed. The deviation and/or bifurcation of the target jet also changed the size distribution.

AB - In this study, one of the five jets issued from a 5-hole Direct Injection (DI) injector was studied in detail using Phase Doppler Particle Analyzer (PDPA) and high speed imaging techniques. The tests were carried out in a constant volume vessel with absolute ambient pressures ranging from 0.05 to 0.5 MPa and injection pressures ranging from 6.0 to 15.0 MPa. Throughout the test conditions, the jet trajectory deviation of the target jet is observed due to the gas pressure imbalance between the inner and outer sides of the target jet. Both the results from spray morphology and the time-resolved droplet velocity have demonstrated the bifurcation of the target jet during the spray process at sub-atmospheric and atmospheric ambient pressures. It is attributed to the joint effects of the pressure imbalance between the two sides of the target jet and the velocity distribution change at the nozzle exit which relates to the vapor pressure of gasoline. The increase in injection pressure advances and enhances the deviation of the jet trajectory due to the larger jet speed. The deviation and/or bifurcation of the target jet also changed the size distribution.

KW - Atomization

KW - Droplet size

KW - Droplet velocity

KW - Gasoline

KW - Spray

U2 - 10.1016/j.fuel.2016.03.047

DO - 10.1016/j.fuel.2016.03.047

M3 - Article

VL - 179

SP - 25

EP - 35

JO - Fuel

JF - Fuel

SN - 0016-2361

ER -